Ext

Data Type: Ext

Parameter	Type	Description	Required/Optional	Notes
ext_xxx	field type registered in the TD system	field value registered in the TD system	Optional
ext_xxxx	field type registered in the TD system	field value registered in the TD system	Optional

JSON

{
    "ext_book_id": "LFOUHOFHOHFNOUH",
    "ext_book_num": 10
}